What does it do? It allows you to replace the original dev_flash/data/cert/CA27.cer with the one for use with drizzt's F*CKPSN v0.5 or any CA27.cer file you chose. Installation: Put the ca27_cer.tcl file in \PS3MFM\tasks\ca27_cer.tcl , start ps3mfm.exe and there you'll have the new plug-in.